Drop-hammer-frame-adjusting means.



H. TERHUNE.

DROP HAMMER FRAME ADJUSTING MEANS;

APPLIGATION FILED JUNE 5, 1911. 1,044,292, Patented Nov. 12, 1912.

2 SHEETS-SHEET 1.

I 'N fibward Tam. 3 e//wmv/C 3 7 g f W I WQ W H. TBRHUNE.

DROP HAMMER FRAME ADJUSTING MEANS.

APPLICATION FILED JUNE 5, 1911.

1 44,292. Patented Nov. 12, 1912.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE. HOWARD TEBHUNE, or CHAMBERFSEII; r NsvLvANIA, AssIeNoE r0 pHAM-BEES- BURG ENGINEERING COMPANY, 0E cHMBEEsEURe, PENNSYLVANIA, A oo roEA- TION OF PENNSYLVANIA.

DROP-HAMMEB-FRAME-AIDJUSTING MEANS.

To all whom it may concern:

Be it known that I, HOWARD TERHUNE, a

citizen of the United States, and .a resident the two parts of a drophammer relatively to each other, in, order that the two dies respectively keyed to the anvil and to the ram of the hammer may beproperly mated with each other; it being especially desired that thedevice shall be substantial as to its construction, shall beconveniently operable and have its'parts so disposed as to requirelittleif any attention or repairs even after prolonged periods of use. Theseobjects and other advantageous ends I secure'as hereinafter set forth,reference being had to the accompanying drawings, in which Figure 1, isa front elevation partly in section illustrating my invention as appliedto a drop-hammer; Fig. 2, is a side elevation of the structure shown inFig. 1; Fig. 3, is a fragmentary section illustrating the connectionbetween the top and bottom portions of the frame, and anvil, and Fig. 4,is a perspective View of one of the bolts constituting .part of theinvention.

In the above drawings 1 represents the anvil of a drop hammer on whichis mounted the frame 2; there being between these parts a tongue andgroove connection as shown in Fig. 3 whereby it is possible to move saidframe transversely of the anvil.

On the anvil is a cap 5 held in place by a key 6 and in turn supportinga die 3 held to it by a key 4. The ram of the hammer is indicated at 7and this has an upper die 8 held to it by a key 9. The anvil and frameare held togetherby inclined bolts 10 whose heads are disposed withinsuitable pockets.

of said anvil and which have springs 12 mounted between the nuts 11 ontheir upper ends and the adjacent surface of the frame.

For adjusting the position of the frame on the anvil in order that thedies 3 and 8 may be properly mated, I provide two adjusting bolts 13each extending through one of the tongues 14 of the frame 2 and eachprovided with a hooked head 15 of the construction Specification ofLetters Patent. Application filed m. 5, 1911.

tion tightly fits a Serial No. 631,230.

shown in Fig. 4. The anvil adjacent said head is provided with anundercut recess for the reception of the correspondingly formed part ofthe bolt head which tightly fits said recess and also at its upper por--recess or pocket in the frame. I

The outer end of each of the bolts is threadedfor the reception of a nut16 having integral with it atoothed collar 17 hearing on the frame; theanvil 1 being recessed as indicatedat 18 so that the nut restsexclusively on the frame. For holding said nut in any given positionagainst the vibrat1on due to the operation of the hammer I provide asmall tooth orplunger 19 mounted in a suitable cavity of the frame andnor- 'mally pressed toward the toothed collar 1 v by a' spring 20.

The frame adjacent the heads 15 of the bolts 13 is cut away so that theunder face of each of said heads bears only on the anvil.

With this arrangement of parts if itbe de- 1 sired to shift the frame 2toward the right side of the anvil in order to properly aline the dies 3and 8, the nut 16 of the bolt 13 on the ri ht hand side of the machine,is to be slacke off while the nut on the other bolt will be tightened.As a result the frame 2 would be moved transversely of the anvil to thedesired position and thereafter the nut of the right hand bolt would betightened up so as to place said bolt in tension.

Owing heads 15 and the cooperating undercut portions of the anvil 1, thetightening of the nuts 16 of the two bolts 13 tends to draw said headsdown on their seats in the anvil, and inasmuch as they tightly fit thecavities of the anvil and frame in which they are mounted, the admissionof scale to said cavities is effectually prevented. There is thus notendency for the head of the bolt to be forced or held out of its properposition and PatentedNov.12, 1912. j

to the provision of the'hooked in case one of the bolts should break itmay. i

very quickly be removed merely b 1 removing the die and the anvil cap. Tereafter a 'new bolt may be-qnickly inserted without the necessity forremoving the frame from tained under tension, a relatively durableconstruction is provided.- It is noted that the bolts 10 cooperate withthe bolts 13 to cause the frame to tightly jam against the nuts on saidlatter'bolts, thus preventing a possible inward shifting of the frame 2due to the shocks received from the hammer blows under operatingconditions.

Another advantage of the use of the tension bolts 13 arises from thefact that there is no tendency for any oftheir partsto be battered orupset as would be the case were they in compression.

I claim 1. The combination in a drop hammer of a frame and an anvilmovable relatively to each other; and means for adjusting said partsconsisting of a. bolt having a hooked head; said head fitting anun'dercut cavity in one of the parts and having a nut operatlve on theother part.

2. The combination in a drop hammer of an anvil and a frame movablerelatively to each other; with oppositely'placed bolts for adjustingsaid frame on the anvil, said bolts each having a hooked head and theanvil having undercut recesses for the reception of the bolt heads; witha nut for each of the bolts, bearing on the frame.

3. The combination in a drop hammer of an anvil and a frame movablerelatively to each other; bolts for preventing the vertical separationof said parts; and other bolts normally in tension for adjusting theframe transversely of the anvil; the first bolts being inclined to thesecond bolts in positions to cause the frame to exert tension on saidlatter bolts,

4. The combination in a drop hammer of an anvil and a frame movablerelatively to each other: bolts for preventing the vertical separationof said parts; and bolts normally in tension for adjusting the frametransversely of the anvil; said latter bolts having hooked heads fittingin undercut recesses of the anvil.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

HOWARD TERHUNE.

Witnesses:

SARAH T. FRoMMEYER, A. A. LONGAKER.

